A nurse in an emergency department is reviewing a client's ECG reading.
Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?
Prolonged PR intervals.
Nondiscernible P waves.
More P waves than QRS complexes.
No correlation between P and QRS waves.
The Correct Answer is A
First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Furosemide is a loop diuretic that can cause loss of potassium from the body.
A potassium level of.2 mEq/L is considered low (hypokalemia) and can be a contraindication for receiving the medication.
Sodium 136 mEq/L is within the normal range and is not a contraindication for receiving furosemide.
B) Creatinine 0.8 mg/dL is within the normal range and is not a contraindication for receiving furosemide.
D) BUN 18 mg/dL is within the normal range and is not a contraindication for receiving furosemide.
Correct Answer is A
Explanation
A banana allergy is often connected to a latex allergy.
This is because some of the proteins in the rubber trees that produce latex are known to cause allergies, and they are similar to the proteins found in some nuts and fruits, including bananas.
This syndrome is known as latex-food syndrome or latex-fruit allergy.
Choice B is not the answer because there is no known cross-reactivity between bananas and anesthetics.
Choice C is not the answer because there is no known cross-reactivity between bananas and povidone-iodine.
Choice D is not the answer because there is no known cross-reactivity between bananas and adhesive tape.
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